Reinforced concrete structure.



W; P. OOW'LES.

REINFORCED CONCRETE STRUCTURE.

APPLIGATIUN FILED MAR.20,1909.

Patented Aug. 30, 1910.

2 SHEETS-SHEET l.

W. P. OOWLES.

REINFORGED CONCRETE STRUCTURE.

APPLICATION FILED MAR. 20, 1909.

969,039. Patented Aug. 30, 1910.

2 SHEETSSHEET z.

Z 9 Z91 y 22 2/ onrrnn sratrns PATENT oFrIoE wrLrirAM'rIERoE cowLEs, or MINNEAPOLIS, MINNEso'rahssIcNoR on sIX-T EN'rHs TO JOHN WUNDER, 0F MINNEAPOLIS, 1 MINNESOTA.

REINFQRCED CONCRETE STRUCTURE.

' .To all whom it may concern:

vBe it known that I, VILLIA PIERCE QowLEs, a citizen of the United States, residing at Minneapolis, in the countyof Henncpin and State of Minnesota,.have invented certain new and useful Improvements in Reinforced Concrete Structures; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention. relates to reinforced c011- crete structures, and has for its object the doing away with the well known T beams now in use and the substitution therefor of slabs integral with the supportingcolumns, thereby producing a much cheaper structure but at the same time preserving the strength and resisting powers to strain that accompanied the said beam structures.

To these ends the invention, consists in the novel combinations of parts and details of construction more fully hereinafter disclosed and particularly pointed out in the claims. Y

Referring to the accompanying drawings forming a part of this specification in which like numerals refer to like parts in all the views :Figure 1 is an elevational view partly in section of integral columns and slabs. Fig. 2, a diagrammatic plan view of the reinforcing rods crossing each other at a column. Fig. 3, is a sectional view on the line 3-3 of Fig. 1. Fig. 4, is a detail plan view of the basket removed. Fig. 5, is an enlarged sectional view showing a. slight modification 1n the means of. anchoring the basket. Fig. 6, is a detail showing one way of temporarily holding together the longitudinal reinforcing rods of the columns. Fig. 7 a detail of a modified means of temporarily holding said rods together, and ig. 8, is a diagrammatic view of the reinforcing rods or wires in a single slab when supported by a pluralit of columns.

1 Indicates any suitable base 1n'whicl1, 1 embedded a plurality of rods 2, crossed by other rods 3, above which is-a second set of crossed rods 4 and 5 suitably anchored 1n he material. Above this second set of rein- Specification of Letters Patent.

Application filed March 20, 1909'. Serial No. 484,708.

Patented Aug. 30, 19 10.

forcing material radially branch outthe extremities 6 of the longitudinally reinforcing rods 7 of the columns 8 to' formfeet,

as shown. These longitudinal rods 7 are tied. together by any suitable means, preferably by the spirally wound wire or rod 9,

and the column 8 is enlarged near its upper tegral therewith and with the mushroom or capital 10, is a slab l l'extending in all di-- rections; and securely embedded in these slabs 14 are the series of crossed relnforclng rods or wires 15 diagrammatically illustrated in Figs. 2'and'8. The basket is preferably secured to this series of rods by means of the hooks or links 16 passing between said rods and the walls of said basket Or the basket may be securely anchored in the concrete-by simply bending sharply'over the ends 17--of its radially disposed longitudinal rods 13, as best shown in Figs. land 5; or the links 16 may be dispensed with,.andthe ends 19 and 19 of each alternate rod 13 may be respectively bent over a hoop l5 and into the column 8, as illustrated in Fig. 5. In addition to the reinforcing rods 15, there is provided the compression rods 20 and the tension rods 21, or certain of the rods 15 may, if desired, be disposed as compression and tension rods respectively. The compression rods are preferably suitably attached to a ring'22, which itself, if desired, may-be constructed of individual rods suitably joined together, as illustrated 1n Figs. 2 and 8.

Considering only-one floor supported by the column 8, fromlthe structure so far disclosed it will be observed that no T-be'ams are required, nor are anycentering pieces or fillings between said beams a-nd'the col..-

umn required. It will be further seen, that-- any strains that may .-come on the slab 14 will be resisted by the compression rods 20,

' and the tension rods 21 in the manner well part in preventing arupture, but also the ends 17 of the longitudinal rods 13 of :the

known to engineers, to say nothing of the inherent strength of the composite structure due to the peculiar disposition of its reinforcing-materials. For'example, should the slab l ihave a tendency to break at the point 25 where it joins the capital or mush room'lO, it 'is apparent that not only will the tension and compression rods do their basket which are preferably extended beyond said point, and almost to the upper'surface of the slab, will greatly aid in averting such a disaster, This strengthening action may be further increased by peculiar anchoring of the ends 19 and 1.9 of said longitudinal rods 13, as well as by the links 16 hooking over the hoop 15, as will be readily understood.

, Considering now other floors above the first slab 14, a column 26 integral with the column 8, mushroom 10 and slab 14: is provided, which also has longitudinal reinforcing -rods 7 tied together by suitable bindings 9. In structures of this nature the tendency is fora-column such as 26 to break off at the point '27 where it joins the slab "14, and to avoid this tendency, I telescope the upper setof rods 7 into the lower set and extend the binding material 9 of the upper set into the telescoping sections, as-

(shown. This feature carries the anchorage and the weight imposed by said column 26 well into the column 8, and into what is really the strongest portion of said column 8,-because op osite or near the telescoping sections are located the reinforcing ma- 'terial of'the basket, 'therods 15, and the tension and compression rods, and each will play their'pa'rts in resisting any tendency of the column 26 to rupture at the point 27.

In fitting the two sets of rods together p ep ato y it is convenient to connect the ends 7' of the upper rods 7 with the ends 7 of'the lower rods 7 by means of wires 30,

ii clip jdsired my be employed, four being. indicated in Fig: "8. Likewise, as many CO1;-

26 abovethe columns 8 may be employed.. as the structure demands. But in the whole forms a single integral to pouring the concrete 1na-- 'terial, in order to temporarily hold the same in place,

bent ends 19 and 19"each securely adjacent column;

.columns and 'mushroom;

reinforced concrete. structure provided with mushrooms at the tops of the columns, and. with the reinforcing material so disposed at each point as to resist the strains most liable to occur at the point in question.-

By omitting the T beams usually employed a' saving in concrete material is effected, and by omitting the centerings and fittings usually'employed around the heads of thecolumns a further saving in the cost 7 ofsuch material is efiected.

I It is obvious that those skilled in the art '75 may vary the construction and disposition of the parts without de artin from the spirit of thisinvention, an there ore I do not. wish to be limited to the exact details shown, exce t as maybe required by the claims.

I hat I claim is 1. In a concretestructurethe combination'of a column; a slab integral therewith; a series of crossed reinforcing rods 15 embedded in said slab; a tension member 21 embedded in said slab; a compression member 20 also embedded in said slab; a capital or mushroom integral with said column and slab; a basket, comprising longitudinally radiating rods and windings embedded; in

said capital or mushroom; a ring 15; and a connection between said basket and said ring, substantially as described; v I 1 2. In a reinforced concrete structure, the combination of aplurality ofintegral columns in longitudinal 'alinement, each provided with a set of reinforcing rods, the set of rods in the one column telescopinginto the set of rods in the other; connections between the telescoping portions cif said rods; 10 a reinforced capital or mushroom surround ing the telescopingparts of rods; and a re nforced-slab integral with said co'lunm and capital or mushroom, substantially as described. v i

3. In a reinforced concrete structure'the combination ,of a column provided with a capital integral therewith; and aslab tegral with saidcapital, the latter being r315 inforcedby a basket having the longitudi' U nally radiating rods 13 provided with the anchored in the concrete material, substantially as described. 'c 4. Ina reinforced concrete structure, the 1 combination of a plurality of integral columns, in longitudinal alinement, each provided witha setof reinforcing rods, the set in onecolumn telescoping into-the set in an a reinforced mushroom surrounding the telescoping parts of sa d rods; a reinforced 'slab integral with said and material 9". spirally wound around said telescoping rods, substantially as described. v .5. In a reinforced concrete structure, thecombination of a plurality of integral col- 1 spirally wound "wire 9 surrounding said umns, in longitudinal alinement, each protelescoping rods, substantially as described; vided with a set of reinforcing rods, parts i In testimony Whereofl I affix my signaof said sets telescoping into each other; a ture, in presence of two Witnesses. 5 mushroom surrounding the telescoping parts of said sets of rods; said mushroom being. WILLIAM PIERCE COWLES. provided with a reinforcing basket having the longitudinal rods 13 anchored in the concrete material; a reinforced slab integral 10 with said columns and mushroom; and

Witnesses T. A. WITHERSPOON, A. W NEA E, Jr. 

